This was brought up in an OSSC/Framemeister group on social media, and no one really had an answer. Someone posted saying they couldn’t get Bugs Bunny in Double Trouble on the Sega Genesis to work with the OSSC. I owned a copy of the game so I threw it in my Genesis to see if they just had a bad cart or not, and to my surprise I had the same problems.
It’s not that the game completely doesn’t work, that’s not really the case. The game starts fine (the first few screens are in 320×224, then the main game is in 256×224) and the menu screen is also fine. However once you enter the stage after about 1-2 seconds the OSSC completely loses sync. If you pause the game the sync will return and the picture comes back, and if you die and the game over/death screen appears the image and sync returns.
What exactly is going on here? I find it strange that this hasn’t been mentioned elsewhere before.
My setup and specs:
North American Model 2 Genesis
Kohatu SCART switch
Insurrection CSYNC Genesis SCART Cable, RGC male-to-male SCART cable from the switcher to the OSSC
Display: LG 20MK400H-B
OSSC on screen display (does not change when sync dies, except the green LED turns red)
AV1 RGBS 262p 15.69 kHz, 59.91 Hz
Pressing info gives:
Prof.2 256×240 262p, and either 450580 or 450581
I can replicate it here, the MD’s output split between a multisync CRT and the OSSC, the game works fine on the CRT but the OSSC loses sync (red light comes on) during normal gameplay. Pausing the game causes the OSSC to sync up again, but as soon as you unpause, within a second or two its back to not being able to sync.
Voultar RGB bypass
FBX M1 Mini Mega
Retro Gaming Cables BNC RGB cable
Extron Crosspoint switch/splitter.